diff --git a/files/templates/CHRISTMAS/submit.html b/files/templates/CHRISTMAS/submit.html
index 0c6fb2e8e5..2fa969c201 100644
--- a/files/templates/CHRISTMAS/submit.html
+++ b/files/templates/CHRISTMAS/submit.html
@@ -134,7 +134,7 @@
 						</div>
 					</div>
 					<div class="tab-pane fade" id="nav-preview" role="tabpanel" aria-labelledby="nav-preview-tab">
-						<div id="preview" class="border border-transparent p-2" style="min-height: 242px;"></div>
+						<div id="preview" class="post-text border border-transparent p-2" style="min-height: 242px;"></div>
 					</div>
 					<a href="/formatting" target="_blank" class="block mt-2.5 text-xs text-gray-500 hover:text-gray-400">Formatting help</a>
 				</div>